請問什麼是從屬子句?有人能幫我標示出來嗎?

做為句子裡的主詞，受詞，同位語，修飾語，或補語的子句，就是「附屬子句」，依功能分別有名詞性質，形容詞性質，或副詞性質。

（If you tell your friends you are going to Transylvania on
holiday 副詞子句，當作述部的修飾語）, they might think （you are joking名詞子句當作動詞think的受詞）. After all, isn’t
Transylvania the home of Count Dracula, the thirsty vampire from
Bram Stoker’s novel? Yes, that is true. However, Transylvania is
also a real place, （which is located in the heart of Romania in
Eastern Europe形容詞子句，當作名詞place的非限定修飾語）. In fact, many people go there in the hopes of
seeing Dracula’s origin. The question is, though, （did Count
Dracula actually exist名詞子句當作主詞補語）?
     It is commonly believed （that Dracula, the book character,
was inspired by a real person named Vlad Dracula名詞子句當作延遲的主詞，前面的it是虛主詞）. Born in 1431 in
the Transylvanian town of Sighisoara, this prince earned his
nickname “Vlad the Impaler”by the cruel way （he punished his
enemies形容詞子句當作名詞way的修飾語）. According to legend, he once impaled 20,000 Turkish
prisoners in one day.
     Many places in Transylvania are linked with Vlad and the
Dracula story. One such place is Bran Castle. This 600-year-old
structure is often promoted as Dracula’s Castle. The castle’s
stone stairs and secret halls give visitors the feeling （that a vampire
might be waiting around every corner名詞子句當作feeling的限定性質的同位語）.

subordinate clause (gram)is dependent clause; a clause which, introduced by a conjunction, serves as a noun, adj or adv.
subordinating conjunction, (gram) is one that introduces a subordinate clause, eg because, if, as.
Hence, subordinating or being subordinated found in the essay are:-
If ,After all, that, However, which, In fact, in, seeing, though, that, was inspired by, by, according to, that, might be waiting, around.